was commercially available in
4
triples
GPTKB property
Random triples
| Subject | Object |
|---|---|
| gptkb:The_Kinetoscope | 1894 |
| gptkb:Baird's_television_system | 1930s |
| gptkb:cylinder_phonograph | 1890s |
| gptkb:Mechanical_television | 1930s |